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https://github.com/espressif/esp-idf.git
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147 lines
4.2 KiB
C
147 lines
4.2 KiB
C
// Copyright 2019-2020 Espressif Systems (Shanghai) PTE LTD
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include <string.h>
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#include "esp_log.h"
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#include "esp_err.h"
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#include "esp_pm.h"
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#include "freertos/FreeRTOS.h"
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#include "freertos/semphr.h"
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#include "freertos/timers.h"
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#include "driver/rtc_io.h"
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#include "driver/dac.h"
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#include "soc/dac_periph.h"
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#include "hal/dac_hal.h"
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static const char *DAC_TAG = "DAC";
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#define DAC_CHECK(a, str, ret_val) ({ \
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if (!(a)) { \
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ESP_LOGE(DAC_TAG,"%s:%d (%s):%s", __FILE__, __LINE__, __FUNCTION__, str); \
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return (ret_val); \
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} \
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})
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extern portMUX_TYPE rtc_spinlock; //TODO: Will be placed in the appropriate position after the rtc module is finished.
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#define DAC_ENTER_CRITICAL() portENTER_CRITICAL(&rtc_spinlock)
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#define DAC_EXIT_CRITICAL() portEXIT_CRITICAL(&rtc_spinlock)
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#ifdef CONFIG_PM_ENABLE
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static esp_pm_lock_handle_t s_dac_digi_lock = NULL;
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#endif //CONFIG_PM_ENABLE
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/*---------------------------------------------------------------
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Digital controller setting
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---------------------------------------------------------------*/
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esp_err_t dac_digi_init(void)
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{
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DAC_ENTER_CRITICAL();
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dac_hal_digi_init();
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DAC_EXIT_CRITICAL();
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return ESP_OK;
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}
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esp_err_t dac_digi_deinit(void)
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{
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#ifdef CONFIG_PM_ENABLE
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if (s_dac_digi_lock) {
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esp_pm_lock_delete(s_dac_digi_lock);
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s_dac_digi_lock = NULL;
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}
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#endif
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DAC_ENTER_CRITICAL();
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dac_hal_digi_deinit();
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DAC_EXIT_CRITICAL();
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return ESP_OK;
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}
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esp_err_t dac_digi_controller_config(const dac_digi_config_t *cfg)
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{
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DAC_CHECK(cfg->mode < DAC_CONV_MAX, "DAC mode error", ESP_ERR_INVALID_ARG);
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DAC_CHECK(cfg->interval > 0 && cfg->interval < 4096, "DAC interval error", ESP_ERR_INVALID_ARG);
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DAC_CHECK(cfg->dig_clk.div_num < 256, "DAC clk div_num error", ESP_ERR_INVALID_ARG);
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DAC_CHECK(cfg->dig_clk.div_b > 0 && cfg->dig_clk.div_b < 64, "DAC clk div_b error", ESP_ERR_INVALID_ARG);
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DAC_CHECK(cfg->dig_clk.div_a < 64, "DAC clk div_a error", ESP_ERR_INVALID_ARG);
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#ifdef CONFIG_PM_ENABLE
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esp_err_t err;
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if (s_dac_digi_lock == NULL) {
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if (cfg->dig_clk.use_apll) {
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err = esp_pm_lock_create(ESP_PM_NO_LIGHT_SLEEP, 0, "dac_dma", &s_dac_digi_lock);
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} else {
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err = esp_pm_lock_create(ESP_PM_APB_FREQ_MAX, 0, "dac_dma", &s_dac_digi_lock);
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}
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if (err != ESP_OK) {
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s_dac_digi_lock = NULL;
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ESP_LOGE(DAC_TAG, "DAC-DMA pm lock error");
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return err;
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}
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}
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#endif //CONFIG_PM_ENABLE
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DAC_ENTER_CRITICAL();
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dac_hal_digi_controller_config(cfg);
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DAC_EXIT_CRITICAL();
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return ESP_OK;
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}
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esp_err_t dac_digi_start(void)
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{
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#ifdef CONFIG_PM_ENABLE
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DAC_CHECK((s_dac_digi_lock), "Should start after call `dac_digi_controller_config`", ESP_FAIL);
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esp_pm_lock_acquire(s_dac_digi_lock);
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#endif
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DAC_ENTER_CRITICAL();
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dac_hal_digi_start();
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DAC_EXIT_CRITICAL();
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return ESP_OK;
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}
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esp_err_t dac_digi_stop(void)
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{
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#ifdef CONFIG_PM_ENABLE
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if (s_dac_digi_lock) {
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esp_pm_lock_release(s_dac_digi_lock);
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}
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#endif
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DAC_ENTER_CRITICAL();
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dac_hal_digi_stop();
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DAC_EXIT_CRITICAL();
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return ESP_OK;
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}
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esp_err_t dac_digi_fifo_reset(void)
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{
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DAC_ENTER_CRITICAL();
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dac_hal_digi_fifo_reset();
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DAC_EXIT_CRITICAL();
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return ESP_OK;
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}
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esp_err_t dac_digi_reset(void)
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{
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DAC_ENTER_CRITICAL();
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dac_hal_digi_reset();
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DAC_EXIT_CRITICAL();
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return ESP_OK;
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}
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